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Table 9 Calculated Water Quality Index and their classification of the samples

From: An application of Water Quality Index (WQI) and multivariate statistics to evaluate the water quality around Maddhapara Granite Mining Industrial Area, Dinajpur, Bangladesh

Sample WQI Water type Sample WQI Water type
MRS-1 31.23008 Excellent MRS-17 42.11095 Excellent
MRS-2 37.06531 Excellent MRS-18 31.4552 Excellent
MRS-3 28.06065 Excellent MDS-19 26.77772 Excellent
MRS-4 35.07572 Excellent MDS-20 44.10005 Excellent
MRS-5 10.23388 Excellent MDS-21 17.44005 Excellent
MRS-6 14.97247 Excellent MDS-22 19.51724 Excellent
MRS-7 37.29106 Excellent MDS-23 19.94317 Excellent
MRS-8 18.25328 Excellent MDS-24 19.07301 Excellent
MRS-9 16.69171 Excellent MDS-25 20.80748 Excellent
MRS-10 16.16417 Excellent MDS-26 19.08683 Excellent
MRS-11 15.65285 Excellent MDS-27 29.87894 Excellent
MRS-12 15.77154 Excellent MDS-28 19.37103 Excellent
MRS-13 15.14981 Excellent MDS-29 29.33892 Excellent
MRS-14 63.64195 Good MDS-30 25.17631 Excellent
MRS-15 21.79876 Excellent MDS-31 20.55718 Excellent
MRS-16 18.54043 Excellent